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arxiv: hep-th/0304045 · v3 · submitted 2003-04-07 · ✦ hep-th

Tachyon Effective Actions In Open String Theory

David Kutasov , Vasilis Niarchos This is my paper
classification ✦ hep-th
keywords openstringactiontheoryaspectslimittachyonactions
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We argue that the Dirac-Born-Infeld (DBI) action coupled to a tachyon, that is known to reproduce some aspects of open string dynamics, can be obtained from open string theory in a certain limit, which generalizes the limit leading to the usual DBI action. This helps clarify which aspects of the full open string theory are captured by this action.

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  1. Mapping Tachyon effective field theory to a subsector of Klein-Gordon theory

    hep-th 2026-04 unverdicted novelty 5.0

    Tachyon EFT near its minimum is mapped via collective field theory to a coherent-state subsector of Klein-Gordon theory, indicating quantum-level equivalence between open and closed string descriptions of unstable D-b...